A Study of Delay and Doppler Spreads at 24 GHz ISM band

This article investigates the wide-band channel characteristics at 24 GHz ISM band in a mobile radio environment. The mobility in the test environment is achieved by attaching the transmit antenna to a KUKA robot’s arm. The radio measurements were carried out inside the robotics lab at the University of Gävle, Sweden. The radio channel measurements were carried out at various situations, e.g., line of sight (LOS), non-line of sight (NLOS), regular lab environment, reflective environment, and different velocities of the robot’s arm. The influence of these situations on the power delay profile, Doppler spectral density, root mean square (RMS) delay spread, RMS Doppler spread, coherence bandwidth and coherence time, has been studied.

[1]  Theodore S. Rappaport,et al.  Wideband Millimeter-Wave Propagation Measurements and Channel Models for Future Wireless Communication System Design , 2015, IEEE Transactions on Communications.

[2]  Junyi Li,et al.  Indoor mm-Wave Channel Measurements: Comparative Study of 2.9 GHz and 29 GHz , 2014, 2015 IEEE Global Communications Conference (GLOBECOM).

[3]  Bo Ai,et al.  On Indoor Millimeter Wave Massive MIMO Channels: Measurement and Simulation , 2017, IEEE Journal on Selected Areas in Communications.

[4]  Theodore S. Rappaport,et al.  Indoor Office Wideband Millimeter-Wave Propagation Measurements and Channel Models at 28 and 73 GHz for Ultra-Dense 5G Wireless Networks , 2015, IEEE Access.

[5]  E. Violette,et al.  Millimeter-wave propagation at street level in an urban environment , 1988 .

[6]  Kate A. Remley,et al.  Analysis of E-Band Path Loss and Propagation Mechanisms in the Indoor Environment , 2017, IEEE Transactions on Antennas and Propagation.

[7]  Yang Yang,et al.  60-GHz Millimeter-Wave Channel Measurements and Modeling for Indoor Office Environments , 2017, IEEE Transactions on Antennas and Propagation.

[8]  Taoka Hidekazu,et al.  Scenarios for 5G mobile and wireless communications: the vision of the METIS project , 2014, IEEE Communications Magazine.

[9]  Manuel García Sánchez,et al.  RMS delay and coherence bandwidth measurements in indoor radio channels in the UHF band , 2001, IEEE Trans. Veh. Technol..

[10]  Abbas Jamalipour,et al.  Wireless communications , 2005, GLOBECOM '05. IEEE Global Telecommunications Conference, 2005..

[11]  Huan Nguyen,et al.  Path Loss, Shadow Fading, and Line-of-Sight Probability Models for 5G Urban Macro-Cellular Scenarios , 2015, 2015 IEEE Globecom Workshops (GC Wkshps).

[12]  Dajana Cassioli,et al.  Millimeter waves channel measurements and path loss models , 2012, 2012 IEEE International Conference on Communications (ICC).

[13]  Theodore S. Rappaport,et al.  28 GHz and 73 GHz millimeter-wave indoor propagation measurements and path loss models , 2015, 2015 IEEE International Conference on Communication Workshop (ICCW).

[14]  Xiongwen Zhao,et al.  Millimeter-Wave Propagation Channel Characterization for Short-Range Wireless Communications , 2009, IEEE Transactions on Vehicular Technology.